Table 3 Associations between obesity and the risk of development of rheumatoid arthritis in the subset with available waist circumference measurement
From: Abdominal obesity, gender and the risk of rheumatoid arthritis – a nested case–control study
All | Men | Women | Development of seropositive RA | Development of seronegative RA | |
|---|---|---|---|---|---|
OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | |
BMI (OR per 5 kg/m2) | 1.31 (1.05, 1.64) | 1.91 (1.15, 3.19) | 1.19 (0.92, 1.53) | 1.28 (0.99, 1.65) | 1.52 (0.88, 2.64) |
Waist circumference (OR per cm) | 1.02 (1.01, 1.04) | 1.05 (1.01, 1.09) | 1.01 (0.99, 1.04) | 1.02 (1.00, 1.04) | 1.02 (0.98, 1.07) |
Abdominal obesity | 1.40 (0.92, 2.14) | 3.57 (1.50, 8.51) | 1.04 (0.63, 1.71) | 1.36 (0.85, 2.17) | 1.21 (0.41, 3.62) |
No abdominal obesity | Reference | Reference | Reference | Reference | Reference |
Obesity | 2.95 (1.20, 3.51) | 3.56 (1.27, 9.96) | 1.68 (0.88, 3.23) | 1.98 (1.07, 3.67) | 2.18 (0.62, 7.67) |
Overweight | 0.84 (0.52, 1.36) | 1.12 (0.41, 3.04) | 0.77 (0.44, 1.35) | 1.02 (0.60, 1.74) | 0.31 (0.09, 1.07) |
Normal or underweight | Reference | Reference | Reference | Reference | Reference |
Obesity | 2.12 (1.35, 3.63) | 3.37 (1.37, 8.31) | 1.88 (1.02, 3.46) | 1.96 (1.12, 3.45) | 3.66 (1.15, 11.7) |
No obesity | Reference | Reference | Reference | Reference | Reference |